xiii, 182 p. A print copy of this thesis is available through the UO Libraries. Search the library catalog for the location and call number. / Representing a distinct contribution to the tradition of comparative international research in the environment, this dissertation studies the effects of national economic restructuring programs, implemented under the administration of multilateral development institutions, on the fertilizer intensity, energy intensity, and value efficiency of national commodity agriculture for the period 1980 to 2002. Known as structural adjustment, these conditional loan agreements have been thoroughly studied with respect to various social outcomes but in terms of environment impact, sociological investigation has been limited to case studies and to preliminary quantitative analyses of deforestation. Examining the consequences of structural adjustment on soil fertility management is a unique contribution to the field. Combining empirical work with theoretical explication, I frame the object of study using agrarian systems theory and the concept of societal metabolism, examining how the problem of soil fertility in the modern era has become subsumed into industrial processes that are fossil-energy intensive. Relating this historical development to the ongoing dialectic between the forces, relations, and conditions of production, I investigate how the international division of labor, manifested in the uneven and combined development of national economies, facilitates an international division of nature and thereby reproduces the hierarchical system of appropriation that drives the ongoing global expansion of the metabolic rift. Laying out competing theoretical perspectives on the potential for rational management of agricultural modernization, in the empirical component of this project I employ cross-sectional time-series panel regression analysis of secondary data on national development indicators in order to evaluate the relative merits of these contrasting theories for the sustainable development possibilities of Third World nations. The cumulative effects of structural adjustment significantly and independently increase the negative externalities of agricultural modernization while at the same time diminishing the potential economic efficiency of intensive nutrient management. / Committee in charge: Richard York, Chairperson, Sociology; John Foster, Member, Sociology; Robert 0 Brien, Member, Sociology; Joseph Fracchia, Outside Member, Honors College

En Australie du Nord, une nouvelle catégorie d'acteurs sociaux aborigènes a émergé dans les années 1990 : les « rangers ». Fondés sur la professionnalisation et la formalisation de responsabilités « traditionnelles » envers la terre et la mer, leurs emplois et programmes sont présentés comme des mécanismes de « gestion des ressources naturelles » et de conservation de la biodiversité contrôlés par les communautés autochtones, tout comme un support de « développement » local. Cette thèse propose un regard critique sur le système des rangers en partant de la question suivante : constitue-t-il une manifestation « d'impérialisme écologique » ? L'ethnographie (2009-2010) des interactions sociales mises en jeu par les activités du groupe de rangers de la communauté de Ngukurr (Terre d'Arnhem, Territoire du Nord) y est associée à une contextualisation et à une analyse articulant échelles locale, régionale et nationale et discours international. Le système des rangers reflète diverses logiques endogènes et exogènes qui dépassent ses objectifs affichés de résilience environnementale et socio-économique. Il repose sur des rapports de pouvoir et des négociations complexes entre les différents acteurs impliqués (dont l'État australien), entre « savoirs écologiques traditionnels » et science, et entre rapports sociaux locaux et bureaucratiques. Cette étude met au jour le processus de bureaucratisation et les multiples ingérences et ambivalences inhérents à ce système, qui (re)produit des distinctions et tensions sociales. Elle souligne également la fonction de médiateurs qu'endossent les rangers ainsi que l'ambiguïté de la position de chercheur dans un tel contexte. / In Northern Australia, a new category of Indigenous social actors emerged in the 1990s: “rangers”. Their jobs and programmes are based on the professionalization and formalization of “traditional” responsibilities for the land and sea. They are presented as natural resource management and biodiversity conservation mechanisms controlled by Indigenous communities and as a basis for local “development”.This thesis proposes a critical view of the ranger system, starting from the following question: is this system a form of “ecological imperialism”? The ethnography (2009-2010) of the social interactions at work in the activities of the Ngukurr community's ranger group (Arnhem Land, Northern Territory) is combined with a contextualization and an analysis linking local, regional and national levels with the international discourse.The ranger system reflects various endogenous and exogenous logics that go beyond its stated aims of environmental and socioeconomic resilience. It is based on complex power relations and negotiations between the different actors involved (including the Australian State), between “traditional ecological knowledge” and science, and between local and bureaucratic social relationships. This study reveals the bureaucratization process and the many external interventions and ambivalences inherent in this system which (re)produces social distinctions and tensions. It also highlights the mediator or broker role played by the rangers as well as the ambiguous position of the researcher in such a context.